...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Special topics & reviews in porous media >POROUS MEDIUM MODELING OF TURBULENT HEAT TRANSFER IN SQUARE ROD ARRAYS WITH A MULTI-SCALE SECOND MOMENT CLOSURE
【24h】

POROUS MEDIUM MODELING OF TURBULENT HEAT TRANSFER IN SQUARE ROD ARRAYS WITH A MULTI-SCALE SECOND MOMENT CLOSURE

机译：多尺度第二矩封闭的方形杆阵列中湍流换热的多孔介质模拟

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To predict turbulent heat transfer in porous media, double (volume and Reynolds) averaged transport equations are considered. In the double averaged energy equation, the dispersion heat flux, the volume averaged turbulent heat flux, which is split into the macro-scale and the micro-scale turbulent fluxes, and the energy exchange terms (wall heat transfer and tortuosity) between fluid and solid phases come out. For obtaining the thermal fields, an improved two-energy equation model, which solves the energy equations of solid and fluid phases, is developed to consider non-equilibrium energy fields in porous media. Coupled with the multi-scale second moment closure for flow fields, algebraic models of the volume averaged turbulent heat flux and wall heat transfer terms are discussed. The proposed models are evaluated in the thermal fields of fully developed square rod array flows where the dispersion heat flux and the tortuosity are absent. The results suggest that the present models are promising for both conjugate and isothermal heat transfer conditions at the solid surfaces.
机译：为了预测多孔介质中的湍流传热，考虑了双重（体积和雷诺兹）平均传输方程。在双重平均能量方程中，弥散热通量，体积平均湍流热通量（分为宏观和微观尺度的湍流通量）以及流体与流体之间的能量交换项（壁热传递和曲折度）固相出现。为了获得热场，开发了一种改进的双能量方程模型，该模型求解了固相和流体相的能量方程，考虑了多孔介质中的非平衡能量场。结合流场的多尺度二阶矩闭合，讨论了体积平均湍流通量和壁传热项的代数模型。在没有分散热通量和曲折性的完全发展的方杆阵列流的热场中评估了提出的模型。结果表明，本模型对于固体表面上的共轭和等温传热条件都是有前途的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号